Mortising-machine.



"0.073378. Patented May 7, 1901. B. 8. BROWN.

MORTISING MACHINE.

(Application filed Dec. 8, who.) (Ilo'llodaL) 4 Sheets-Shoat I.

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Ne. 673,378. Patented May 7, l90l.

R. 8. BROWN. MORTISING MACHINE.

(Application filed Dec. 8, 1900.)

4 Sheets-Shaet 2 (No Model.)

Wz'tzzevsar a. Q/ a Patented May 7, I90l. R. 8. BROWN.

MORTISINGMACHINE.

(Application filed Dec. 8, 1900.)

4 Sheets-Sheet 3.

(N'o'ModeL) &

JNITED STATES PATENT OFFICE.

ROBERT S. BROWN, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE NEWBRITAIN MACHINE CQMPANY, OF'SAME PLACE.

MORTISING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 673,378, dated May '7,1901.

Application filed December 8, 1 900; Serial No- SQIZ LB. (No model.)

.in various directions with relation to the grain of the wood and toform them with ease and rapidity in the three principal positionsoccurring in common use or in other positions or relations with respectto the material as may be desired, the machine being particularlydesigned to make, first, the ordinary mortises or slots parallel withthe edges of the wood in use with door-stiles and the frames of variousarticles of furniture; second,mortises or slots directly across thegrain of the wood, as in loom-boards, reed-boards of. organs, &c., and,third, diagonal mortises crossing the grain of the wood at an angle offortyfive degrees or at any inclination desired, as in manufacturing theslats of stationary blinds or similar work. Any of these mortises may ofcourse extend through 'the work or be formed partially therethrough-andbe of what is known as the blind variety, and any of them may beproduced with a tapering cutting-chain, so that they will be larger atthe upper than at the lower end as the work lies on the table, althoughthe invention is not limited in this respect, for cutters of other kindsmay be employed without departure therefrom.

A further object of the invention is the provision, inmortising-machine, of a column serving as a slide for a work-supportingtable, which may be adjusted to different positions with respect to thecutter employed by partially rotating the table around said column, andin connection with this column and parallel thereto a vertical shaft,which acts as a guide for compelling vertical movement of said, tableunder the influence of a treadle or equivalent device, to be hereinafterdescribed.

A further object of the invention is the provision of improved means forraising the table, said means including a treadle pivoted in a forkprojecting from a sleeve swiveled on a rod in line with the axis of thevertical column and sustained by a bracket in a chamber in the base ofthe machine, the band'- wheel of the lifting-rod being provided with ahub having a spherical or rounded end entering a socket in a bracketprojecting from the table and said lifting-rod being threaded at itslower extremity and inserted in a nut having an angular extension oroifset, to which one end of the treadle is pivoted,whereby the treadlemay be adjusted with relation to the table without lifting or loweringthe latter.

A further object of the invention is the provison of a hood for thesuction-fan case, a chip-breaker, and a hand-guard assembled in a head,which may be fastened to the column by screws at the top thereof.

A further object of the invention is the provision of a chip-breaker ofpeculiar construction and faced with wood, the side walls of the openingin the wooden facing acting as supports to the work and preventingslivering thereof by the upward run of the chain.

In the accompanying drawings, Figure l is a perspective view of myinvention with the table in position for enabling the cutter to formmortises in the work at right angles to the length thereof. Fig. 1 is adetail of the slide and the chain bar and block, showing the manner inwhich the bar and block are secured to said slide. Fig. 2 is aperspective view of my improved machine with the worksupporting tablearranged at an angle to the position illustrated in Fig. 1 and thecuttingchain in such relation with the table that it will form mortisesin the work parallel with the longitudinal line thereof. Fig. 3 is afront elevation, partially in section, of the upper part of the machine,the column and guide rod or shaft being broken away. Fig. 4 is a sectionon line a a, Fig. 3. Fig. 5 is a side elevation of the upper portion ofthe machine, the column and work-table lifting-rod being broken away.Fig. 6 is a partial longitudinal section of the work-supporting table,taken on line 121), Fig. 5. Fig. 7 is a detail in section of a part ofthe head of the machine, said section being taken on line 0 c, Fig. 5.Fig. 8 is a sectionof the machine on line (1 d,'Fig. 2, looking in thedirection of the arrow. Fig. 9 is a side elevation of the base ofthemachine, the column and liftingrod being in section and the basebeing broken away to show the treadle connection. Fig. 10 is a frontelevation of the yoke of the head and of the chip-breaker and hand-guardrod,

the chain cutter being represented by dotted lines. Fig. 11 is a sectionon line e e, Fig. 10. Fig. 12 is a section of the upper part of thevertical column and of the guide-rod, one of the swiveling collars beingrepresented in plan view and a screw having a conical point being shownfor securing the collar to the.

column in any desired adjusted position. Fig. 13 is a cross-section ofthe column and guide-rod, showing the work-table-support ing bracket orknee. Fig. 14 is a plan view of the work-supporting table adjusted forthe formation of ordinary mortises parallel with the edges of the work;and Fig. 15 is a crosssection of the work, showing such a mortise formedtherein. Fig. 16 is a plan viewof the table arranged to hold the work inposition for the formation of diagonal mortises; and

Fig. 17 is a perspective view of a block, showing such a mortise formedtherein. Fig.-18 is a similar view of the table and connected partsadjusted to a position to carry the work under the cutter, so thatmortises or slots may be made squarely across the grain of the material;and Fig. 18 is a cross-section of the work containing such a mortise.

Similar characters designate like parts throughout the several views.

Referring to the drawings, the numeral 5 designates a vertical columnrising from a base-plate 6, the latter having a hollow verticalextension 6, to which the column may be bolted or otherwise secured,said extension being cut away or cast open at one side 'at 6 for apurpose hereinafter stated. To the upper end of this column 5 is securedby bolts 7' a head 7, having a laterally-extending bracket 8 for thereception of a shaft 9, carrying a pulley 10, to which power may beapplied. At its inner end this shaft 9 carries a sprocket-wheel 12 inengagement with a cutter-chain 13, fitted for movement over a chain-bar14, which may be secured to a block 14 by a bolt 14 and both said barand said block are adj ustably and simultaneously connected to a slide15, fitted on ways of an apron 7, depending from the head 7 by a bolt16, having at its inner end a head working in a longitudinal groove orT-slot 15' of the slide and at its outer end a nut 16, which servessimultaneously to clamp the bar to the block and the block to the slide.If desired, the

bolt 14 may be dispensed with; but I prefer to employ said bolt as anadditional means for firmly clamping the upper end of the chain-bar tothe block 14.

For the purpose of adjusting the slide 15, and thereby the chain-bar 14,to take up the slack in the cutter-chain a hand-Wheel 1'? is provided,said Wheel being secured to a screw 17', working in the nut 18 of a yoke18, the side bars 19 of said yoke being secured to the slide in anydesired way.

Attached to the head 7 and surrounding the shaft 9 is a case 20 for thereception of a suction-fan or blower, (not shown,) by means of which thechips, dust, &c., are withdrawn, and projecting from this case is abracket 20, in which the screw 17 is mounted for rotation, but isprevented by collars or otherwise from longitudinal movement therein.

Projecting from the case 20 is a hood 70, which may be hinged atthereto, said hood covering the sprocket-wheel 12 and being so arrangedthat its lower end is open for the passage of the chain and the chipsremoved from the wood thereby, and the hood opens into the case 20 inthe manner-described in my Patent No. 621,026, dated March 14, 1899, r

to which reference may be had. In order to afford access to the sprocketand theupper part of the cutter-chain, the hood may be swung upward onits hinge, as will be obvious. v I

Projecting from the slide 15 are brackets 22 and 23, respectively, forthe reception of a sliding rod 24, to which a chip-breaker is attached,as will be hereinafter described, and a guard rail or bar 25, said rodand bar being secured adjustably in a yoke 80, having a platform ortable for the reception of weights 81, which may be varied in number andsize as desired and which normally tend to force said rod downward bygravital action, and connected to the lower end of this '31 a facing 32,of Wood, preferably of some hard variety, which subserves a purposehereinafter set forth, and this facing is preferably located on theunder side of the plate, as shown.

Upon the upper end of the column 5, im mediately beneath the head 7, issleeved a collar 33, having a laterally-extending tubular bracket 33,and passing preferably through a reinforced portion of this collar andbracket is a screw 34, havinga conical end 34, adapted to fit within anyof a series of openings 35 in the colum n 5, for a pu rpose hereinafterstated.

Designated by the numeral 36 is a knee or work-table support having asleeve 36, fitted for swinging movement upon the vertical column 5, andupon the knee 36 is mounted a work-table 37, having a guide 38, whichfits over a corresponding guideway 39 of said knee, as illustrated inFig. 6, said table being capable of adjustment back and forth on theknee by means of a screw 40, workingin a nut of the knee. (See Fig. 4.)To take up wear and lost motion of the parts, a shim 41 may be securedby a screw 42 to the un der side of the table, and after adjustment thetable may be fastened to its guideway by a pinch-screw 43, working in adepending bracket 44 of the table and having an operating-handle 45,said screw bearing against the side of the shim 41, as illustrated inFig. 6. This work-table is, as illustrated in Figs. 1, 2, 4, and 5,preferably formed as an integral casting having a vertical back 37,against which the material may be clamped, said casting being adjustableon the ways of the knee 36. 1

Attached to or formed integral with th sleeve 36 of knee 36 is a tubularextension 36 and loosely fitted in this extension and secured to thebracket 33 of the collar 33 is a guide rod or shaft 21, the lower end ofwhich is received and also secured in a tubular bracket 80 of acollar 80loosely sleeved upon the column 5 and capable of rotation around thesame adjacent to the point where said column is connected to thevertical extension 6' of the base 6. By the means described this shaftor rod 21 is secured parallel with the column 5, and it therefore servesas a guide, which while rotating with the work-supporting table 37 andthe collars 33, 36, and 44 as the table is adjusted around the columncompels said table to reciprocate in a fixed path.

Projecting from the collar 80 are two arms or lugs 80 and alsoprojecting from the knee 36 is a perforated lug 36 which is closed orcupped on its under side, as at 36, for a purpose hereinafter stated.Passing between the lugs 80 is a lifting-rod 46, the upper end of whichis inserted in the perforated lug 36 above mentioned, and thislifting-rod is, as

illustrated in Figs. 1 and 2, threaded intermediate its length at 47 andcarries on said threaded portion a pair of check-nuts 48, and is alsothreaded at its lower end, as at 49, and is inserted in a nut 50, havingan angular extension 50, to which a treadle 51 is connected, asillustrated in Figs. 1, 2, and. 9.

Located in line with the axis of the column 5 and within the hollow base6 is a shaft 52, upon which is sleeved a fork 53, between the arms ofwhich the treadle 51 is pivoted at 54, (see Figs. 1 and 2,) the lowerend of said shaft being secured in a bracket 90 of said base by a screw91, whereby as the table is rotated around the column the treadle moveswith it.

At its upper end the lifting-rod 46 is provided with a hand-wheel 55,having a hub with a convex or partially-spherical portion 55, which fitsthe socket on the under side of the projectionv 36 as illustrated inFigs. 4 and 5, the perforation 36 in said projection being flared upwardto permit the necessary movement of the lifting-rod 46 when it isactuated by the treadle.

In virtue of the construction just described it will be seen that byrotating the hand-wheel 55 the position of the treadle with relation tothe table may be changed without lifting or lowering the latter, so thatwhen the operator subsequently applies his foot to said treadle a newheight of table may be presented, and if it is desirable to regulate thelimit of downward movement of said table this can readily beaccomplished by simply shifting the check-nuts 48 while the operator hashis footupon the treadle.

Located on the guide-rod 21 is an adjustable stop or collar 56, which issecured to said rod by a screw 56, and this stop when set to the desiredposition limits the upward movement of the work-supporting table, andthereby regulates with exactitude and nicety the depth to which a blindmortise shall be cut in the material upon the work-table.

As illustrated in Figs. 1, 2, 14, 16, and 18, the work-supporting table37 is provided with a series of slots or openings 57, 58, and 59 for thereception of the cutter-chain as the same passes downward through thework in forming the mortises therein, and these openings are so locatedand disposed with relation to the cutter-chain that one of them will bebrought directly beneath said chain when the table is swung around thecolumn 5 and is adjusted to the desired position with relation to saidchain.

Any desired means may be employed for clamping the work upon the table,and in the drawings Ihave illustrated an arm or bracket 60 adjustablysecured to the front of the table by a bolt 61, said arm 60 having aninternally-threaded eye at one end, in which is titted a screw 62,carrying a clamp 63, this screw being provided with a hand-wheel 64,bywhich the clamp may be manipulated back and forth as desired. As will beseen by the construction described, the clamp may be adjusted byswinging the arm 60 to a position where it will lie parallel with thetable, as in Figs. 3 and 5, or to the desired inclined position withrelation to the table, as illustrated in Figs. 1 and 2. In the frontwall of the table a series of openings is provided, each havinginternally-threaded walls and serving as a not for the bolt 40, wherebysaid bolt and the clamp carried thereby may be shifted along the tableand be set in the position desired.

The collar 36, from which the table knee or bracket 36 projects, issplit or divided at 3 and may be adjusted to take up wear by means of atangent-screw 4, which will pinch the same to the column 5.

Divided bushings2, preferably of lumen or equivalent metal, are providedfor taking up wear on the guide-rod 21,-and screws 21 are illustrated inFigs. 14 and 16 for adjusting said bushings when desired.

'Io sustain the work and prevent slivering by the cutter-chain, woodfacinus may be used in the pockets 57, 58, and 59 of the worktable, ifdesired, and these facings may be inserted, as at 100, (see Figs. 14 and16,)- in the" slots or pockets of the table below the chain. These lowerwood faci-ngs prevent sl-ivering of the material as the chain goesthrough the same, and the wood facing 32 of the chip-breaker 28, beinglocated above the work and surrounding the entire mortise, acts asapresser-foot and prevents the wood from I being slivered by the upwardrun of the chain.

In the operation of the machine the chain cutter cuts through the woodfacing 32 before it reaches the work, and the'sides of the cut in saidwood facing act as supports to the work being operated upon to preventslivering of the same by the chain, and it is only necessary torenewsaid facing when a smallersized cutting-chain i's em'ployed. By theconstruction described the fibers of the wood lying at the side as wellas at the ends of the mortise, which would naturally be disturbed by thechain-cutter in any angular position of the same relative tothe grain ofthe wood, are-supported and sustained against slivering action by thechain, and in this way per fect mortises-may be formed'in the materialno matter what may be its angular position or relationto thecutter-chain.

Particular attention is directed to the fact that all of the partscarried by the head 7 may be assembled as a bench job before said headisplaced ,uponthe column 5and secured thereto by bolts or screws 7whichpass throughthe base 7 of the head, said column furnishingthe solesupport for the head. The driving-shaft 9 may also'be supported with-individed-bushings 102, as illustrated in Fig. '7, if desired, and othersimilar mechanical details of construction may be employed throughoutthe machine wherever they are needed without departure frommy invention.

In the operation of my improved machine when it is desired to form anordinary mortise parallel with the edges of the Wood, as'in door-stilesand the frames of various articles of furniture, asabove stated, thed'etents or screws securing the collars 33 and 80 to the column arewithdrawn and the sleeve 36 and collars 33 and 80 which carry theguide-rod 21, are swung around the column to'the position illustrated,for example, in Figs.- 2 and l4,whichwill bring the slot or pocket 59immediately beneath the cutter-chain. The foot is thenplaced upon thetreadle 51, which has moved with the table, thereby depressing the sameand raising,through the instrumentality of the lifting-rod t6, the kneeor bracket 36 and its attached sleeve 36 until the cutterchain haspenetrated to the desired distance through the material upon the table37, the extent of forward movement of the worksupporting table beinglimited by the adjustable stop or column 56 on the guide-rod 21 and saidtable being caused to travel upon the column in a true vertical path bysaid guiderod, it being of course understoo that collars 33 and 80 arefirmly secured to the column by the detents 34: and 84;, which areinserted within the desired perforations in the .Walls of said column.

If it is desired to form mortises or slots-directly across the grain ofthe wood'-as'in loomboards, the reed-boa-rds-of organs, &c.the table isadj usted' in the same manner to the position represented in Figs. 1 and18 and, be ing secured in such position, is raised by the treadl'e toform a mortise or slot therein, as

illustratedin Fig. 1-8 In forming these kinds 'of mortises the clamp 63is withdrawn, there being no necessity for the same,-for the chaincutter will act in forming the mortise or slot to cause the material tobe snugly forced (See Fig. 18.

In forming diagonal mortises or slotscrossing-the grain of the wood atforty-five degrees,

' or thereabout, with relation to theedges of the work the table 37 isswung to the position represented in Fig. 16 and the clamp-63 isadjusted firmly to secure the material against the back 37 of thetable-37, and the parts are actuated in the same manner as abovedescribed.

By adj ustingthe stop or collar 56 uponthe guide-rod 21 the table will,as abovestated, ,Lbeso limited in its upward movement that the cuttermay be made to penetrate'the material exactly ineachinstance to thedesired extent, so that either blind mortises extending partiallythrough the wood or mortises extendingfully throughthe same may readilybe formed,- if desired.

Many changes may be'made in the details of myinvention without departuretherefrom,

and the invention is not limited to the precise construction illustratedand described.

The form of the column upon which the table is reciprocated may bediiferent from that shown-,'and this-is true of the guide rod or shaftfor compelling the movementof the ta- .ble ina vertical path.

While acutter-chain is shownas a preferred means for formingmortises'ofdesired kinds in'the material, itis distinctly to be understood that theinvention is not limited The details of the suction fanor blower and ofthe chip-breaker andhand-guardrod may also be widely varied withoutdeparture from the invention,vwhich is not limited to the constructiondescribed nor to a facing of wood secured to said chip-breaker, forother suitable material may beemployed for this purpose, if desired.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-- 1. In a mortising-machine the combination, witha vertical column, of a head carrying a cutter; means carried by thehead for actuating said cutter; means for detachably securing said headto the upper end of the IIO column; a work-table swiveled upon thecolumn; means for securing said woi'ktal)le when adjusted around thecolumn; and means for reciprocating the work-table.

2. In a mortising-machine, the'combination, with a cylindrical column,of a head bolted to the upper end of said column; a cutter-chain; meanscarried by the head for actuating said chain; a work-table swiveled uponthe column; devices for reciprocating said work-table; and meansfor somounting said devices that they will move with the worktable when thelatter is adjusted around the column.

3. In a mortising-machine, the combination, with a cylindrical column,of a work-tableadjustable around said column; means for securing saidwork-table in position when adjusted; a cutter for mortising the work onthe.

table; and means for actuating said cutter; means for reciprocating thework-table; and means for so supporting the worlctable-reciprocatingmeans that they will conform to the able with the table; and means forreciprocating said table.

6. In a mortising-inachine, the combination, with acylindrical column,of a head having a base-plate bolted to the upper end of said column; ashaft carrying a sprocketwheel journaled in bearings of the head; acutter-chain; means carried by the head for supporting and guiding saidchain; a casing for the reception of a fan or blower mounted in the headand having a hood covering said sprocket-wheel and cutter-chain; aWork-table mounted for rotary adjustment upon the column; and means forreciprocating said work-table. I

7. In combination with a column, a head having a base-plate bolted tothe upper end of said column; a bracket extending from said base-plate;a shaft carrying an element to which power may be applied, and journaledin said bracket; a fan-casing through which the shaft passes; a cuttermounted in the head and actuated by the shaft; a worktable swiveled tothe column; a treadle; and means for so connecting said treadle with thework-table that it will move with the worktable when the latter isadjusted around the column.

8. In a mortising-machine, the combination, with ahead, of a verticalcolumn to which said head is secured; a slide adjustable on an adjustingthe same carried by the head; a

shaft journaled in the head and carrying a sprocket-wheel; a chainbarand block; a bolt for simultaneously securing the chainbar and block tosaid slide; a work-table mounted for rotary adjustment and longitudinalmovement upon the column; and means for reciprocating said worktable.

10. The combination, with a work-support, of means for cutting the workheld upon said support; a chip-breaker for holding the work upon thework-support; and a facing of greater dimensions than the opening to beformedin the work, said facing being secured to the chip-breaker, and inwhich facing an opening is formed before the cutteroperates upon thework. i I

11. The combination, with a work-supporting table, of a cutter-chain;means for actuating said chain; a chip-breaker; and a facing of greaterdimensions than the opening to be formed in the work secured to saidchipbreaker and bearing upon said work, the cutter-chain forming anopening in the facing before it reaches the work.

12. The combination, with a work-support,

of a cutter; and a chip-breaker having a facing of wood through whichthe cutter cuts its way as it passes into the material upon thework-support, said facing being of dimensions to cover and bear upon thematerial on the part and adjacent to the part thereof through which thecutter passes.

13. The combination, with a work-support, of a chip-breaker; means foryieldingly sustaining said chip-breaker upon the material; and a facing,of greater dimensions than the opening to be formed in the material,detachably secured to the under side of the chipbreaker, and throughwhich facing the cutter cuts its Way as it passes into the work.

14. In a mortising-machine, a chip-breaker consisting of an L-shapedplate having a rib, and a facing of greater dimensions than the mortisesto be formed detachably secured to the under side of said plate, incombination with a work-support; and a cutter, thelatter forming anopening in the facing before it operates upon the work.

-l5. In a mortising-maehine, the combination, with a chip-breakerconsisting of a plate having a facing of greater dimensions than themortise to beformed detachably secured to its underside, of acutter-chain which cuts its way through said facing before it operatesupon the work; a reciprocatory work-table; and means for actuating saidtable.

c; I I 673,378

16. In a mortising-machine, a yieldingly? supported chip-breaker havinga facing of greater dimensionsthan the mortise to be formed, incombination with a mortising-cutter which cuts its way through saidfacing;

and a support uponvwhich the work is placed,

said \vorkobeing operated upon by the cutter after said cutter hasformed an opening in the facing. I 3

17. lhe combination, with a cutter, of a work-table; and ayieldingly-supported plate formed in the work, said facing being locatedon the under side of said plate and in which facing the cutter forms anopening before it reaches the work; and screws for detachably securingthe facing to the plate.

19. In a mortising-machine, the combination,-with a column,'of collarssleeved upon said column; a guide rod or shaft connecting said collars;and a work-table swiveled upon the column and having a portion throughwhich the guide-rod passes.

20. In a mortising-m'achine, the combination, with a cylindrical column,of collars;

sleeved u pon said column; guiding means cooperating with the collars; awork-tableswiveled upon the col-umn and having a portion thereof incontact with the guiding means; mechanism for reciprocating thework-table; anda cutter for mortising the material upon said work-table.

21. In--a mortising-machine, the combination, with a'vertical column, ofa work-table swiveled upon said column; means for reciprocating thework-table upon the column; a cutter; means for operating said cutter;and 5 means for securing the work-table against rotation after it hasbeen adjusted upon the column to the desired position with relation tothe cutter.

22. In a mortising-machine, the combina- 1 tion, with a cylindricalcolumn, of a work-table swiveled to the column; collars surround- 3 ing.the column above and below the worki table; means for adjustablysecuring saidj collars in rotary relation with the column; a guide forthe work-table between the collars;

and means for reciprocating said work-table.

23. In a mortising-machine, the combination, with a cylindrical column,of a head secured to the upper end of said column; a collar located uponthe column beneath said head and capable of rotation thereon; means foradj ustably securing said collar to the column; a collar located nearthe foot of the column and capable of rotary movement thereon; a guiderod or shaft uniting said collars;

awork-table swiveled to the column and having abracket through which theguide-rod loosely passes; a cutter and means for actuating the samecarried by the head; and means for reciprocating the work-table.

24. In a mortising-machine, the combination, with a vertically-arrangedcolumn, of a head secured to the top ofsaid column; a cutter and meansfor actuating the same carried by the head; a collar having an extensionadj ustably secured to the column beneath the head; a second collarsecured in like manner near the foot of the column; a guide-rod securedto the extensions of said collars; a Work-table fitted for slidingmovement upon the column, a portion of said table being sleeved upon theguide-rod; and means for reciprocating said work-table.

25. In a mortising-mac'hine, the combination, with a column, of awork-table swiveled thereon; a cutter; means for reciprocating theWork-table upon the column; means for securing the work-table in thedesired position of rotary adjustment'upon the column; and a deviceconnected with the means for reciprocating the work-table in a manner toperm it said means to move with the work-table during the rotarymovement of the same about said column.

'26. The combination, with a column, of a cutter; a work-ta blesupported for rotary and 5 sliding movements on said column; a treadle;

and means connecting the treadle with the work-table.

27. The combination, withacylindrical column, of a cutter; means foractuating said cutter; a work-table connected to the column for rotaryadjustment thereon; a treadle connected to said work-table; and meansfor so supporting said treadle that it will move with the work-tablewhen the same is adjusted around the column.

28. The combination, with a cylindrical column, of a work-table swiveledto the column; a lifting-rod connected to the worktable; a treadle towhich the lifting-rod is attached; and means for so supporting saidtreadle that it will move with the work-table when the latter isadjusted around the column.-

29. The combination, with a cylindrical column, of a work-table having asleeve fitted over the column and adjustable around the same; alifting-rod connected to said sleeve; a treadle pivoted to thelifting-rod; and means for supporting the treadle so that it will movewith the work-table when the latter is adj usted.

30. The combination, with a column, of a knee swiveled to the column andhaving a work-table; an adjustable lifting-rod fitted to said k-nee; atreadle pivotally connected to the lifting-rod; and means for sosupporting said treadle that it will move with the knee when the latteris adjusted around the column.

31. The combination, with a column, of a work-table a knee upon whichthe work-table is mounted, said knee being swiveled to said column forrotary adjustment thereon; a bracket. projecting from the knee andhaving a semispherical socket on its under side; an adjustablelifting-rod; a hand-wheel secured to the lifting-rod and having a hubfitted to the socket in the bracket; and means for actuating thelifting-rod.

32. The combination,withacylindrical column, of a knee having a sleevesurrounding the column and adjustable thereon; a worktable carried bythe knee; a bracket projecting from the knee and having a semisphericalsocket; a lifting-rod; a device secured to the lifting-rod and having asemispherical portion fitted in said socket; and a device for actuatingsaid lifting-rod and so mount-ed that it will move with the knee whenthe latter is adjusted around the column.

33. The combination, with acylindrical column, of a knee swiveled tosaid column and having a perforated bracket projecting from its swiveledportion said bracket having a socket with rounded walls; a lifting-rodthe end of which passes through the perforation in the bracket; a wheelsecured to the liftingrod and having a hub the end of which conforms toand fits within the socket of the bracket; a device for actuating theliftingrod; and means for so supporting said device that it will movewith the knee during the adjustment of the same around the column.

34. The combination, with acylindrical column, of a knee swiveled tosaid column; a work-table carried by the knee; a lifting-rod connectedto said knee; a treadle pivotally connected to the lifting-rod; and adevice mounted for turning movement and to which the treadle is pivoted.

35. The combination, with a column, of a Work-table swiveled upon saidcolumn; a rod for actuating said work-table, said rod having a threadedportion; a nut in which said threaded portion is inserted; a device foractuating the lifting-rod, said device being connected to the nut; andmeans for so supporting said device that it will conform to the movementof the work-table when adjusted around the column.

36. The combination, with a vertical column, of a work-table sleevedupon said column and capable of rotative and reciprocative movementsthereon; a swiveled support; a treadle pivoted to said swiveled support;and means for connecting said treadle with the work-table.

37. The combination, with a vertical column, of a knee sleeved upon saidcolumn and capable of rotative and reciprocative movements thereon; awork-table carried by the knee; a lifting-rod for actuating the knee; atreadle connected to the lifting-rod; and a swiveled support to whichthe treadle is pivoted.

38. The combination, with a vertical col- 11 mn, of a knee sleeved uponsaid column, and capable of rotative and reciprocative movementsthereon; a work table adjustably mounted on the knee; an adjustablelifting rod for actuating the knee; a support swiveled to the base inline with the axis of the column; and a treadle pivoted to said supportand to the lifting-rod.

39. The combination, with a vertical column, of a knee swiveled to saidcolumn; a work-table carried by the knee; a lifting-rod for actuatingsaid knee: a treadle pivoted to the lifting-rod; and a fork swiveled tothe base of the column and between the arms of which the treadle ispivoted.

40. The combination, with a support, of a knee mounted for reciprocationand for rotary adjustment thereon; a work-table carried by the knee; alifting-rod for actuating the knee, said rod having a threaded portion;a nut having an extension; a treadle pivoted to said extension; andmeans for so mounting the treadle that it will move with the worktablewhen the latterv is adjusted around the column.

41. The combination, with a vertical column, of a knee sleeved upon saidcolumn; a work-table carried by the knee; a lifting-rod for actuatingthe knee; a support located in line with the axis of the column; andatreadle swiveled to said support and connected with the lifting-rod.

42. The combination, with a vertical column, ot' a knee sleeved uponsaid column; a work-table carried by the knee; a lifting-rod foractuating the knee, said rod having a threaded lower end; a nut in whichthe threaded end of said rod is inserted, said nut having an angularextension; a treadle fitted to said extension, and a swiveled forkbetween the arms of which the treadle is mounted.

43. The combination, with a vertical column, of a knee sleeved upon saidcolumn and havinga tubular extension; a work-table carried by the knee;a lifting-rod for actuating the knee; said lifting-rod having a threadedlower end and an intermediate threaded portion; a nut having an angularextension, in which nut the lower end of the lifting-rod is inserted; atreadle pivoted to said angular extension; means for supporting saidtreadle; a guide-rod working through the tubular extension of the knee,and means for regulating the position of the treadle.

44:. The combination with a vertical column, of a knee swiveled to saidcolumn and having a tubular extension; a work-table carried by the knee;means for reciprocating said knee and work-table; and a stop on theguide-rod for limiting the throw of the Worktable.

45. In a mortising-ma'chine, the combination with a cylindrical column,of a head secured to the upper end of said column; a mortising-cutterand means for actuating said cutter carried by the head; a collarlocated on the column immediately beneath the head and capable of rotaryadjustment thereon; a second collar located adjacent to the base of thecolumn; a guide-rod connecting said col- IIO through which the cutterpasses; and a fae- I lars and passing through a bearing of the tion,with a column, of a series of collars mounted for rotative adjustment onsaid column; means for securing said collars to the column when-adjustedaround the same; a

knee swiveled to the column and having a tubular extension; awork-table; aguide-rod secured to the collars and passing through theextension of the knee; a stopcollar adjustably secured to the guide-rod;a mortising-cutter; and means for reciprocating the knee until itsfurther movement is limited by the engagement of the work-table with thestop-collar.

47. In a mortising-machine, the combination, with a vertical column, ofa head detachably secured to the top of said column; a cutter-chain;ashaft journaled in the head and carrying a sprocket-Wheel in engagementwith the chain; a collar adjustably secured to the column below thehead; a knee swiveled to the column; a Work-table carried by the knee; acollar adjustablysecured to the column below the Work-table; aguide-rodsecured to the collars and passing through the knee; astop-collar adjustably secured to the guide-rod; a treadle; and devicesconnecting said treadle with the knee.

48. In a mortising-machine, the combination, with a cutter, of awork-table having a slot or opening; a facing for said opening, on whichfacing the material rests; a device ing of greater dimensions than themortise to be formed carried by said device and bearing upon the top ofthe work, and through which facing the cutter cuts its Way before itcommences action upon the Work.

49. In a mortising-machine, the combination, with a vertical column, ofa head secured to the top of said column; a cutter and means foractuating the same carried by the head; and a work-table swiveled to thecolumn and having a series of slots or'openings into whichthe cutter maypass.

50. In a mortising-machine, the combination, with a vertical column, ofa head bolted to the top of said column; a cutter-chain and chain-bar, aslide to which the chain-bar is secured, and means for adjusting saidslide all carried by the head; a collar having a tubular bracket andadjustably secured for rotat-ion around the head; a knee swiveled to thecolumn and capable of reciprocation longitudinally thereof, said kneehaving a'tubular extension; a work-table carried .by the knee; a collarhaving a tubular bracket and adjustably secu red for rotati've movementadjacent to the foot of the column; a guiderod secured in the tubularbrackets of the collars and passing freely through the tubular extensionof the knee; a stop-collar on said guide-rod; and means for elevatingthe knee.

ROBERT S. BROWN.

